// src/commands/wanStatus.js
//
// /wanstatus <store> [--window 24h]
//
// Prisma SD-WAN diagnostics for a store: healthscore, per-path LQM,
// voice traffic quality (when configured), and active alarms.

import { collectSdwanForStore } from '../services/enrichment/sdwanEnrichment.js';
import { renderWanDiagnosticsMarkdown } from '../services/renderers/wanDiagnosticsRenderer.js';
import { findSdwanSiteForStore, siteNameForStore } from '../integrations/paloalto/sites.js';
import { pickWindowArg, parseWindowMinutes } from '../utils/windowArgs.js';
import { logger } from '../utils/logger.js';

export async function handleWanStatus(bot, trigger) {
  const query = trigger.query || {};
  const args = trigger.args || [];
  const storeNum = (args[0]?.trim() || query.storeNum || query.store || query.s || '').trim();

  const windowRaw = pickWindowArg(args) ?? query.window ?? null;
  const windowMinutes = parseWindowMinutes(windowRaw);
  if (windowRaw && windowMinutes == null) {
    await bot.say(
      'markdown',
      `Unrecognised window \`${windowRaw}\`. Use \`15m\`, \`1h\`, \`6h\`, \`24h\`, \`1d\`, or \`7d\`.`,
    );
    return;
  }

  if (!storeNum || !/^\d{2,4}$/.test(storeNum)) {
    await bot.say(
      'markdown',
      'Please provide a 2–4 digit store number.\n' +
      'Examples:\n' +
      '- `/wanstatus 782`\n' +
      '- `/wanstatus 782 --window 24h`\n' +
      'HTTP: `?storeNum=782&window=7d`',
    );
    return;
  }

  logger('wan:status', `Collecting WAN status for store ${storeNum}`);

  let site;
  try {
    site = await findSdwanSiteForStore(storeNum);
  } catch (err) {
    logger('wan:status', `Site lookup failed for store ${storeNum}: ${err.message}`, 'warn');
    await bot.say(
      'markdown',
      `❌ WAN lookup failed for store ${storeNum}: ${err.message}`,
    );
    return;
  }

  if (!site) {
    const expected = safeSiteName(storeNum);
    await bot.say(
      'markdown',
      `Store ${storeNum} is not Prisma SD-WAN managed (expected site \`${expected}\`).`,
    );
    return;
  }

  await bot.say('markdown', `⏳ Collecting WAN metrics for store ${storeNum}…`);

  const data = await collectSdwanForStore(storeNum, { windowMinutes });
  const md = renderWanDiagnosticsMarkdown(data, { storeNum });
  await bot.say('markdown', md || 'No WAN data available.');
}

function safeSiteName(storeNum) {
  try {
    return siteNameForStore(storeNum);
  } catch {
    return '<invalid store number>';
  }
}